@ALB I’ve driven a speedster replica without IRS and it handled and rode just fine for me. This is Just a fun toy, not a daily driver or track weapon. It will probably get driven a couple of times a week, and will be stored for about half of the year due weather. While I appreciate the benefits of IRS, it’s not something I need or would truly utilize. Plus, I like personally knowing the swing axle experience is what I would be getting with an actual speedster. No matter what, these are cars built on antiquated technology and won’t be anywhere close to a modern vehicle. I know these replicas handle much than my all original 55’ Bel Air did.